There are 20 people in a room, If they all shake each other's hands once and only once, HOW MANY handshakes are there altogether
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2 answers:
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The anwser is 9
my handwriting is good but if you have any more questions plz lmk
my handwriting is good but if you have any more questions plz lmk
Answer:
Image attached
Step-by-step explanation:
Origin looks to be (0, -1), so move each point out by 2
